Determine how many additional force-directed layout iterations should occur for this clustered network.
            
            
            
            
            
            
            
            
            protected virtual int ComputeClusterLayoutIterations( 
   int ,
   int 
)
             
        
             
        
            Parameters
- level
 
- the recursion depth for clustered layout
 - maxiter
 
            
            Return Value
a non-negative number that will be temporarily added to 
MaxIterations